package main

import "fmt"

type People interface {
	Speak(string2 string) string
}

type Student struct {}

func (s *Student) Speak(think string) (talk string) {
	if think == "love" {
		talk = "You are a good body"
	} else {
		talk = "hi"
	}
	return talk
}

func main() {
	var p People = &Student{}
	think := "love"
	fmt.Println(p.Speak(think))
}